MAX2039 is a high-linearity passive upconverter or downconverter mixer designed to support UMTS/WCDMA, DCS, and PCS base-station transmitter or receiver applications with an RF frequency range of 1700MHz to 2200MHz, NF of 7.3dB, and conversion loss of 7.1dB. The IIP3 is typically +34.5dBm and +33.5dBm for downconversion and upconversion operation, respectively. With an LO frequency range of 1500MHz to 2000MHz, this particular mixer is ideal for low-side LO injection architectures. (For a pin-to-pin-compatible mixer meant for high-side LO injection, contact the factory.) In addition to offering excellent linearity and noise performance, the MAX2039 also yields a high level of component integration. This device includes a double-balanced passive mixer core, a dual-input LO selectable switch, and an LO buffer. On-chip baluns are also integrated to allow for a single-ended RF input for downconversion (or RF output for upconversion), and single-ended LO inputs. The MAX2039 requires a nominal LO drive of 0dBm, and supply current is guaranteed to be below 135mA. The MAX2039 is pin compatible with the MAX2031 815MHz to 995MHz mixer, making this family of passive upconverters and downconverters ideal for applications where a common PC board layout is used for both frequency bands. The MAX2039 is available in a compact 20-pin thin QFN package (5mm x 5mm) with an exposed paddle. Electrical performance is guaranteed over the extended -40°C to +85°C range.
The MAX2039 mixer provides 7.3 dB noise figure and 7.1 dB conversion loss for RF frequencies from 1700 MHz to 2200 MHz. It features a double‑balanced passive core, an on‑chip LO buffer, and a built‑in SPDT LO switch with 45 dB isolation, supporting low‑side LO injection architectures.
The device is supplied in a 20‑pin thin QFN package (5 mm × 5 mm) with an exposed paddle. It operates from –40 °C to +85 °C, draws up to 135 mA supply current, and requires a nominal LO drive of 0 dBm. Detailed electrical characteristics, conversion‑loss curves, and layout recommendations are provided for both up‑conversion and down‑conversion modes.
| RF Frequency Range | 1700 MHz – 2200 MHz |
|---|---|
| Conversion Loss | 7.1 dB |
| Noise Figure | 7.3 dB |
| Input IP3 (Downconversion) | +34.5 dBm |
| Supply Current (max) | 135 mA |
The device draws up to 135 mA of supply current.
The conversion loss is specified as 7.1 dB.
The mixer provides a noise figure of 7.3 dB.